18987164548006 has 8 divisors (see below), whose sum is σ = 28481978917440. Its totient is φ = 9493171575528.

The previous prime is 18987164548003. The next prime is 18987164548031. The reversal of 18987164548006 is 60084546178981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18987164548003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205291446 + ... + 205383913.

It is an arithmetic number, because the mean of its divisors is an integer number (3560247364680).

Almost surely, 2^{18987164548006} is an apocalyptic number.

18987164548006 is a deficient number, since it is larger than the sum of its proper divisors (9494814369434).

18987164548006 is a wasteful number, since it uses less digits than its factorization.

18987164548006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410698478.

The product of its (nonzero) digits is 92897280, while the sum is 67.

The spelling of 18987164548006 in words is "eighteen trillion, nine hundred eighty-seven billion, one hundred sixty-four million, five hundred forty-eight thousand, six".